Sash construction



Aug. 28, 1956 A. T. HAGERTY SASH CONSTRUCTION 2 Sheets-Sheet 1 Original Filed Jan. 26

E .lili! n (Z/Zdrew Aug. 28, 1956 A. T. HAGERTY SASH CONSTRUCTION 2 Sheets-Sheet 2 Original Filed Jan. 26, 195] SASH CONSTRUCTION Andrew T. l-lagerty, Elkhart, Ind., assignor to The Adlalre Company, Elkhart, Ind, a corporation of Illinois Original application January 26, 1951, Serial No. 207,979,

now Patent No. 2,672,960, dated March 23, 1954. Divided and this application December 34), 1953, Serial No. 402,670

Claims. (Cl. 189-76) This invention relates to metal window constructions and is more particularly concerned with improvements in a fire underwriters window.

This application is a division of application Serial No. 207,979, filed January 26, 1951, now Patent No. 2,672,960, dated March 23, 1954.

It is a rel object of the invention to provide a double sa window which is fabricated of metal members assem led and connected together to provide a rugged construction and which will withstand considerable heat without appreciable buckling or separation of the members.

It is a more specific object of the invention to provide a window of metal frame construction which when glazed with wire glass will be sufliciently rugged to prevent a substantial blaze from penetrating the same and which Will not be penetrated by any substantial amount of water from a conventional fire hose directed against it after it has been subject to such a blaze for a predetermined length of time.

It is a further object of the invention to provide a metal window construction formed of built up sections which are readily assembled and connected together in a simple and efiicient manner and with a minimum of manufacturing equipment.

It is another object of the invention to provide in a window of the type described having horizontal and/or vertical muntins which muntins are fabricated from two plate sections, one of the sections being bent along axial lines to form a member which is T-shaped in cross section with the margins of the material forming the stem and with screw holes formed in the stern by separating the walls thereof to provide a circular shape and spot welding on each side thereof, the holes so formed being threaded to receive retaining screws which secure the other plate section thereto, which other section is bent along axial lines to provide a member having a central longitudinal recess therein for receiving a marginal portion of the stem of the T-shaped section and having side flange portions cooperating with the top portions of the T-shaped section to form therewith glass receiving channel formations or glazing recesses.

It is another object of the invention to provide in a double sash window a meeting rail for the upper fixed sash which is fabricated from two bent plate sections, one section being formed to provide an outer member having a. channel-like cross section with the margins of the plate material extending downwardly and inwardly along the side Walls thereof and terminating in inwardly directed spaced flange formations intermediate the top and bottom edges of the side walls, and with the other plate section being formed to provide an inner member having a smaller channel-like cross section with the margins of the material extending outwardly of the ends of the side walls and adapted to be positioned in juxtaposed elation with the inwardly directed marginal flange formations of the outer member and with clinched inter- 2,760,609 Patented Aug. 28, 1956 locking tongue and slot connections arranged therebetween to connect the members in assembled relation.

It is another object of the invention to provide a joint construction between the ends of the stationary meeting rail and a jamb which will allow the rail to expand with heat and still be anchored solidly to the jamb.

it is a further object of the invention to provide a underwriters window which is economical to manufacturc and which is also sufficiently rugged to meet all the rigid underwriters requirements.

These and other objects of the invention will be apparent from a consideration of the window construction which is shown by way of illustration in the accompanydrawings, wherein:

Fig. l is an elevation of a window construction embodying the principles of the invention;

2 is a vertical section taken generally on the line of Fig. 1 and to an enlarged scale;

3 is a cross section of a horizontal muntin in assembled condition with the section taken through one of the connecting screws;

Fig. is a cross section similar to Fig. 3 at another point on the muntin;

Fig. 5 is an exploded perspective view of the members which form the muntin;

Fig. 6 is a transverse section through the bottom or meeting rail of the fixed sash;

Fig. 7 is a perspective view of a length of the bottom or meeting rail; and

Fig. 8 is a section taken on the lines 8-3 of Fig. 1 showing the joint construction between the meeting rail and the lamb.

The window construction which is illustrated in the drawings is particularly adapted for use where there are substantial fire hazards and has embodied therein the principal features of the invention.

Referring to Fig. 1, the illustrated window comprises a top sash and a bottom sash 11, the top sash 10 being relatively fixed with respect to the window frame and the bottom sash 11 being vertically movable relative thereto. The frame construction is characterized by side rails or jamb members 12, a bottom sill l3 and a top cross member or header 14. The various members of both the window frame and the sash frames are formed from metal plates or strips of relatively thin strong material such as stainless steel. Each of the frame members is fabricated from one or more plates by bending the plate material on lines extending along the longitudinal axis to form the desired structural cross section.

The side and top members of the upper fixed sash 10 are formed as an integral part of the jambs 12. and top cross member 14 which constitute main members of the window frame. The upper sash 10 also includes a horizontal muntin 15 and a bottom cross member or meeting rail 16.

Each jamb member 12 is shaped to provide vertically extending inner and outer face plates 17 and 13 and a connecting web divided into three parallel offset vertical portions 19, 2t) and 21 which face inwardly of the window opening and connecting portions 22 and 23 which are parallel with face plates 17 and 18 and in spaced or offset relation. The margins of the connecting web are integral with the face plates 17 and 18 or are joined thereto along lines intermediate the vertical side edges thereof.

The inner face plate 17 and web portions 19 and 22 form a vertical recess for receiving a side guide channel 24 of U-shaped cross section which is secured therein in inwardly opening relation. The side guide channel 24 receives the side edges of the movable sash 11 on which there is mounted a channel-shaped weather strip 25.

An inside strip 26 of angle formation is attached 'to the vertical portion 21 of the web of the jamb in spaced relation to the face plate 18 and forms with the inner marginal portion of the face plate 18 a recess or glazing channel for receiving the side edge of the panes of glass 27 in the upper fixed sash 10.

The top cross member 14 of the window frame is formed to provide an upwardly opening channel-like section with face plate forming inner and outer wall members 28 and 29 and an integral connecting web portion 30 extending between the same. An inner strip 31 of angled section is secured to the web 30 in spaced relation to the outer face plate 29 and cooperates with the inner marginal portion of the face plate 29 to provide a glazing channel for receiving the top edges of the glass pane 27.

One or more muntins arranged horizontally (as shown in Fig. 1) or vertically (not shown) may be provided in either or both sash and 11. The muntins are fabricated from two strip or plate members of the desired length which are bent and connected together to form oppositely opening glazing channels for receiving the edges of the panes 27 in the sash. Each of the muntins 15 comprises inner and outer members with the outer member formed by reversely bending portions of a plate strip along longitudinal lines to provide a T-shaped cross section with a stem portion 32 and a head portion 33 which extends laterally on opposite sides of the stem portion. The head portion 33 and stem portion 32 are thus characterized by two thicknesses of the plate material with the edges of the plate material terminating at or constituting the free edge of the stem portion 32. At intervals along the length of the stem portion 32 the two margins of the plate material are separated to form a circular recess 34 which is internally threaded to receive a fastening screw 35. The stem portion 32 is preferably spot welded at 36 on opposite sides of each recess 34 to hold the plate material together.

The inner member of the muntin is shaped to provide a central longitudinally extending recess 37 of channel-shaped cross section for receiving the marginal edge of the stem portion 32 of the outer member and laterally extending flange portions 38 at the sides of the recess forming portion. The flange portions 38 of the inner member are spaced from the top portion 33 of the outer member a sufiicient distance to provide oppositely opening glazing recesses for receiving marginal portions of the glass panes 27. The inner and outer members are secured together in glass receiving position by means of the connecting screws 35 which extend through suitable apertures in the inner member and are in screw-threaded engagement in the threaded holes 34.

The bottom or meeting rail 16 of the fixed sash It is fabricated from two elongate plate members or strips which are bent to form outer and inner members 40 and 41. The outer member 40 is formed to provide a generally U-shaped channel section having outer side wall forming members 42 with the marginal edges of the plate material reversely bent within the channel and an edge portion thereof formed into inwardly extending opposed flanged members 43 located intermediate the top and bottom edges of side walls 42 and having a substantial space between the inner extremities thereof. The inner member 41 which constitutes the inner portion of the rail 16 is formed to provide a generally U-shaped channel section of somewhat smaller cross section than the outer member 40 and having side wall portions 44 terminating in outwardly directed flange portions 45 which are adapted to be placed in overlapping relation with the inwardly extending flanges 43 on the member 40. The flanges 43 are provided with slots 46 at spaced points along the length of the rail 16 and the flanges 45 are provided with punched out tongues 47 which in assembled relation extend through the slots 46 and are clinched to hold the inner and outer members in assembled relation with the side walls thereof generally parallel and spaced to form an outer glazing recess for receiving the edge of the glass pane 27 and a parallel inner recess for receiving a downwardly extending outer flanged portion 49 on the top cross rail or meeting rail 50 of the lower sash 11. The inner wall 42 of the meeting rail 16 is preferably provided at its upper edge with suitable weather stripping 51.

The meeting rail 50 of the lower sash 11 is formed of one or more plate members or strips bent to provide a hollow rail formation of rectangular cross section having an inner inwardly extending glazing recess 52 for receiving the top edge of the glass pane 53 and a parallel downwardly or inwardly opening outer recess 54 which is formed between the downwardly extending flange 49 and an outer wall for receiving the upwardly projecting portion of the side wall 42 on the meeting rail 16 to provide a weather seal between the two meeting rails.

The meeting rail 16 (Figs. 2 and 8) is secured at its ends to the jamb members 12 by means of a solid connecting block 55 of aluminum or similar material which is of generally T-shaped cross section with the stem forming portion 56 projecting upwardly into the recess 57 defined by the top and side walls of the inner member 41 of the cross rail 16. The block 55 is close fitting but slidable within the hollow rail 16. It is secured to the vertical web portion 21 of the jamb 12 by means of a pair of screws 5'8. With this construction the meeting rail 16 is rigidly connected to the jamb members 12 while at the same time it is free to slide on the rigid blocks 55 upon expansion or contraction of the rail in the lengthwise direction.

I claim:

1. In a metal window construction having a sash frame including a muntin which is formed of bent metal plates, said muntin comprising two complementary members of generally T-shaped cross section arranged with the top forming portions of the T-shaped sections extending normal to one end of the stem forming portions and in spaced relation to provide glazing channels, and connecting elements for said members, the stem forming portion of one of said members being shaped to provide a lengthwise extending generally rectangular recess for receiving a part of the stem forming portion of the other member, the stem forming portion of said other member being characterized by face abutting double plate sections and the plate sections being separated at longitudinal spaced intervals a suflicient distance to provide socket formations for receiving said connecting elements and the stem forming portion of said first mentioned member having spaced apertures for accommodating said connecting elements whereby said members are secured together by said connecting elements engaging in said socket formations and said apertures.

2. In a metal window construction having a sash frame comprising a muntin, said muntin comprising two complementary members of generally T-shaped cross section which are assembled with the top forming portions thereof extending normal to one end of the stem forming portions and in spaced relation to provide glazing channels, and screw-threaded fastening elements for said members, the stem forming portion of one of said members being characterized by spaced plate sections forming a generally rectangular recess for receiving a part of the stem forming portion of the other member, the stern forming portion of said other member being characterized by double plate sections secured in face abutting relation wtih the plate sections separated at longitudinal spaced intervals to provide sockets for receiving in engaging relation therein the threaded portion of said fastening elements, and the stem forming portions of said first mentioned member having spaced apertures for acoommodating said fastening elements whereby to secure said members in assembled relation.

3. In a metal window construction having a sash frame including a muntin which is characterized by two complement-ary members of generally T-shaped cross section arranged with the top forming portions extending normal to the stem forming portions and in spaced relation to provide glazing channels, and connecting screws for said members, the stem forming portion of one of said members being constituted by spaced plate sections providing a generally rectangular recess for receiving a part of the stem form-ing portion of the other member, the stem forming portion of said other member being constituted by plate sections secured in face abutting relation and said plate sections being separated at longitudinal spaced intervals to provide bores for receiving in connecting relation the threaded ends of said connecting screws, said face abut-ting plate sections being spot welded adjacent the sides of said bores, and the stem forming portions of said first mentioned member having spaced apertures for accommodating said connecting screws whereby said members are secured together by engagement of said connecting screws in said bores and said apertures.

4. In a metal window, a muntin structure which comprises a generally T-shaped member having a stem portion and top flange forming portions extending laterally on opposite sides of the stem portion adjacent one end thereof, said stem portion comprising double plate formations which are secured in face abutting relation and spread apart at longitudinally spaced points to provide fastener receiving socket formations, a second generally T-sh-aped member having a stem portion which is longitudinally recessed to receive the end of the stem portion of said first member and which has top flange forming portions adapted to be positioned with their inner faces in opposed spaced relation with the inner faces of the flange forming portions of said first member to form therewith glazing channels, and fastener members ex tending into said longitudinal recess in said second memher and engaging in connected relation in said socket formations when said members are in assembled glass receiving relation to clamp the glass in said glazing channels.

5. 'In a metal window, a muntin structure which comprises a generally T-shaped member having a stem portion and top flange forming portions extending laterally on opposite sides of the stem portion adjacent one end thereof, said stem portion comprising double plate formations which are secured in face abutting relation and spread apart at longitudinally spaced points to provide fastener receiving socket formations, a second generally T-shaped member having a stem portion which is longitudinally recessed to receive the end of the stem portion of said first member and which has top flange forming portions adapted to be positioned with their inner faces in opposed spaced relation with the inner faces of the flange forming portions of said first member to form therewith glazing channels, and fastener members for securing said T-shaped members in assembled glass receiving relation, the top flange forming portions of said second member being apertured to receive said fastener members and said fastener members engaging in said socket formations when said members are in assembled relation to clamp the glass in said glazing channels.

References Cited in the file of this patent UNITED STATES PATENTS 1,092,727 Linder Apr. 7, 1914 1,240,193 Fromhold Sept. 18, 1917 1,714,188 Plym May 21, 1929 2,134,790 J-ost Nov. 1, 1938 2,570,519 Burgess Oct. 9, 1951 

